It's been a busy week for Orlando Bloom. First he got in an alleged scuffle with Justin Bieber over a reported love triangle. Now he's hanging out with (stay with us here) his ex's rumored onetime boyfriend's former wife!

The British actor, 37, sparked love-square buzz this week while on a Spanish getaway – he was snapped getting cozy with Erica Baxter while partying with friends on a boat in Ibiza, Spain, Tuesday, then again Thursday when they grabbed dinner in Frontera.

A source close to Bloom maintains that he and Erica Baxter "are not dating. They're just good friends." But their closeness is raising eyebrows from the Mediterranean to Australia.

So who's Erica Baxter?

The Australian singer and model and her estranged billionaire husband, James Packer, have known the actor – and his model ex-wife Miranda Kerr – for more than two years. Kerr got to know Packer when she approached him for business advice, and their families even vacationed together in Bora Bora in 2012.

But the plot thickens: Both couples separated in fall 2013. Then, in December, Kerr, 31, and Packer set off dating rumors, and an insider told PEOPLE at the time they were "definitely seeing each other."